biodiesel_notes - transestercation of triglycerides (plant...

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Plant oil: triglyceride Triglyceride: ester Ester: formed by reacting an organic acid with an alcohol . Organic acid (specifically, a fatty acid ): R · O ¨ C · O · H where R is a chain HC group (CH 3 , C 2 H 5 , ) Alcohol: R · O · H The ester is: R · O ¨ C · O · H + R · O · H R · O ¨ C · O · R + H 2 O
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Triglyceride : formed by combining three fatty acids with glyc- erol . Glycerol: 3 carbons with 3 OH groups: H · O · H ˙ C ˙ H · H ˙ O ˙ C ˙ H · H ˙ C ˙ H · O · H Most natural fats have fatty acid components with 16–20 car- bons. The triglyceride molecule will therefore have 50 60 C atoms. Biodiesel is typically produced by the
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Unformatted text preview: transestercation of triglycerides (plant oil) with methanol to produce glycerol and fatty acid methyl ester (FAME). Transestercation : process in which R group in ester (the one associated with the alcohol) is exchanged with a dierent R group contained in a dierent alcohol. R O C O R + R O H R O C O R + R O H The biodiesel transestercation process is...
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biodiesel_notes - transestercation of triglycerides (plant...

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